| A | B |
|---|
| Mercury II oxide changes to mercury and oxygen | decomposition |
| Putting sugar in water | dissolving |
| Plants take carbon dioxide and water to make sugar | synthesis |
| Heating water makes it evaporate | NO CHEMICAL CHANGE |
| sodium carbonate mixes easily with water | dissociation |
| Putting NaCl in water | dissociation |
| zinc metal reacts with hydrochloric acid | single replacement |
| NaCl solution changes to sodium metal and chlorine gas | electrolysis |
| iron placed in CuCl2 solution | single replacement |
| silver nitrate + sodium chloride | double replacement |
| Sodium sulfate + barium chloride | double replacement |
| Silver metal dipped into gold chloride solution | single replacement |
| Nitrogen gas reacts with hydrogen gas to make ammonia (NH3) | synthesis |
| sodium chloride + magnesium nitrate | NO REACTION |
| Taking aluminum oxide and making aluminum metal and oxygen gas | electrolysis |
| Electricity is used to change water into hydrogen and oxygen | decomposition |
| Hydrogen burns in air to produce water | synthesis and combustion |
| Methane (CH4) burns in air | combustion |
| potassium nitrate + sodium chloride | NO REACTION |
| silver metal dipped into sodium chloride solution | NO REACTION |
| Products of combustion of a hydrocarbon | water and carbon dioxide |
| A metal less reactive than gold | NONE |
| Changing ions into elements | electrolysis |
| Potassium sulfide + lead nitrate | double replacement |
| Zinc metal dipped into copper II sulfate solution | single replacement |
| Put lithium oxide in water | dissociation |
| Butane (C4H10) + oxygen gas produces carbon dioxide and water | combustion |
| sugar is changed to solid carbon and water vapor | decomposition |
| A solution of gold chloride is used to plate a fork with gold metal | electrolysis |
| Ethyl alcohol (C2 H5 0H) mixes easily with water | dissolving |
